Doing daily self stretching of the cervical spine and gentle rotation of the neck is good for the cervical spine. According to experience, after 4-6 hours of continuous work or head-down activities, you should do cervical stretching and neck rotation. The method is to first find a chair or sofa with a backrest and sit down, hands up the collar, head back, look up at the ceiling or the sky, continue to keep the head back for about 5 minutes, 5 minutes later the head back to the neutral position, and then gradually rotate the neck gently to the left to the end, and then gently rotate back to the neutral outside, and then gently and slowly rotate the neck to the right to the end, so repeatedly for 5 minutes.